LogicalDOC is a modern document management system with a nice interface, easy to use and very fast. It uses open source Java technologies such as GWT, Spring, Lucene in order to provide a flexible and scalable DMS solution. http://www.logicaldoc.com

uGet, the Best Download Manager for Linux.
uGet is an Open Source download manager application for GNU/Linux developed with GTK+, which also comes packaged as a portable Windows app.
uGet uses very few resources while at the same time packs an unparalleled powerful feature set. These features include a Queue, Pause/Resume, Multi-Connection (with adaptive segment management), Mirrors (multi-source), Multi-Protocol, Advanced Categorization, Clipboard Monitor, Batch Downloads, Individualized Category Default Settings, Speed Limiting, Total Active Downloads Control, and so much more!
For the full Features list go to http://ugetdm.com/features
- Quick Links -
Blog: http://ugetdm.com/blog
Support Forum: http://ugetdm.com/forum
Tutorials: http://ugetdm.com/tutorials
RSS Feeds: http://ugetdm.com/rss
Gallery: http://ugetdm.com/gallery
Frequently Asked Questions (FAQs): http://ugetdm.com/faqs

SquirrelMail is a PHP-based Web email client. It includes built-in pure PHP support for IMAP and SMTP, and renders all pages in pure HTML 4.0 for maximum compatibility across browsers. It has strong MIME support and a flexible plugin system.

phpPgAdmin is a fully functional web-based administration utility for a PostgreSQL database server. It handles all the basic functionality as well as some advanced features such as triggers, views, and functions (stored procs)

phpFreeChat is a free, simple to install, fast and customizable chat that uses by default files for message and nickname storage. It uses AJAX to smoothly refresh and display the chat zone and the nickname zone.

Ajax+Mobile Java Web framework. With 200+ Ajax components and event-driven, Ajax/RIA apps are as effortless and rich as desktop apps and HTML/XUL pages. Support JSP/JSF/JavaEE/Spring, Ajax Push and Client-fusion; also Java/Groovy/Python/JavaScript.

MRBS is a system for multi-site booking of meeting rooms. Rooms are grouped by building/area and shown in a side-by-side view. Although the goal was initially to book rooms, MRBS can also be used to book any resource; computers, planes, whatever you want